Ammonite Thermo Accu 24 with charger
Ammonite Accu Thermo 24
Ammonite Accu Thermo 24
Ammonite Accu Thermo 24
Ammonite Accu Thermo 24
Ammonite Accu Thermo 24

Ammonite Accu Thermo 24

Sale price£1,075.00

The Ammonite Accu Thermo 24 is designed as a heating system battery that can be used simultaneously with any Ammonite primary light head.


Dispatched in 1 to 2 days

Contact Form & Details

How can we help?

If you need to contact us for any issue or assistance, you can do so online by filling out the online Contact Form, emailing us at or calling us on +44(0)1305 824 555. If it's about a purchase you've made for us please also include your order number.

Our brick-and-mortar store Underwater Explorers based on Portland, Dorset is staffed 7 days a week, including weekends and bank holidays. As it's an active store visited by divers from around the country and world regularly, if we can't make it to the phone for any reason please leave a message and we'll get back to you asap.

Any queries are usually answered the very same day and at most within 24 hours.


Why Portland?

We’re located on the Isle of Portland (in Dorset) because Portland has been one of the most popular scuba diving locations in the United Kingdom even before we set up operations here back in the year 2000.

On one side, we’re minutes away from the sheltered waters of Portland Marina and Harbour, while on the other, it’s just a brief walk to reach our famous scuba diving destination Chesil Cove and start of the 16-mile-long Chesil Beach.  

Portland’s location makes it ideal for scuba diving, freediving, snorkelling and other surface water sports activities. 

Check out how many wrecks we have around here by clicking on Scimitar Diving's Wreck & Dive Sites chart!

Alongside dive clubs, many instructors and dive schools travel here to train and offer scuba diving certification ranging from open water diver to mixed-gas tech diving or rebreather diving levels.

Whether you’re doing a boat dive from Portland Marina or Castletown or a shore dive at Chesil Cove, Portland is well known for offering many possibilities: Reef diving to wreck diving and night diving, underwater photography or underwater videography. Anything other than cave diving is possible here.

Likely being the best-stocked diving shop in the UK, at Underwater Explorers we offer in-store scuba diving equipment advice and sales, as well as gas fills, to locals and visitors (read About Us).

But... If you’re googling “scuba diving shop near me” like some, look no further, there's DirDirect online.

Here at DirDirect, we list our cutting-edge equipment for worldwide delivery and we’ve got you covered whatever your level of diving: We’re your local dive store wherever you are in the world.

All that with over 20 years of experience especially in technical diving, from training to equipment, advice and sales.


Underwater Explorers, Unit 1, Maritime Business Centre
Mereside, Portland, Dorset, DT5 1FD


The Ammonite Accu Thermo 24 is specifically designed as a heating system battery which you can use with any Ammonite primary light head whilst operating a Santi Heated Vest, Heated Undersuit or Santi Heated Gloves.

Ammonite Thermo Type 24 Accu

Operating at 12V with up to 200W heating power and a 2-stage power control.

Modern power supply source for heated dive wear

Simplicity, intuitive operation and performance reliability; up to 200 Watts heating power. The charging port of Accu Thermo 24 may be optionally applied to connect any of Ammonite dive light heads.

Advanced functions of Accu Thermo 24

LED Indicator provides information on the battery status and charge level. Intelligent E/O "knows" when the cable is disconnected and when to cut off voltage, as well as when to bring back power supply after reconnecting.

Easy switch and effective adjustment

Two-stage power control means effective power management, extending battery life. The magnetic switch position change is easy to feel, even when wearing thick diving gloves.

The compact size casing is made of high-grade aluminium coated with hard anode while the device is sealed with two o-rings and equipped with a safety valve.

Additional protection and status signalling

The inner microchip system signals low battery level with a strobe flash and automatically switches to back-up mode (light output at 20% light intensity) when the battery is drained.

Ammonite Accu Thermo 24 maximum operating times

  • Heated Gloves 8hrs 50min
  • Heated Vest 4hrs 25min
  • Heated Vest + Gloves 2hrs 50min
  • Heated Undersuit 2hrs 10min
  • Heated Undersuit + Gloves 1hr 45min

Want to know which batteries can be used with SANTI heating systems and decide which suits you best? Check out our Comprehensive Review of Batteries for SANTI Heating.

DirDirect Price Match

SKU: AM-920175

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